In case others saw this, there was some kind of a change to my and another community member's order yesterday. We were both in an odd configuration limbo where the car variation (M3P) was missing, but M3P-only options (like the spoiler) were present. It might be because we were early orderers on the 26th. We both had our orders modified for us yesterday to correct it. Until then, I had an edit button, but as of Monday, it exhibited the behavior mentioned above (takes you back to the My Tesla page without opening the configurator).
After their edits, I lost my edit button completely, along with the option to change anything about my order. The night before, I had noted the issue on the price, along with a note on my insurance (since the expiration had updated since my order). Now I have a "48 hours" page (though no one has ever contacted me, of course). I did call shortly after the change, and all they could say for certain was that I hadn't been assigned a VIN. I didn't learn anything else about the process that hasn't already been posted here.
Oh yeah, following the update, I finally had a delivery estimate: Sep/18 to Nov/18. As far as I can tell, everyone without a VIN is seeing this, so that's kind of crap, too.